You are given some objects with various shapes, colours, which are made of different materials. Can you classify or group them based on more than one criteria?
No, I am unsure.
Grouping can be done based on various parameters such as colour, shape, source, etc. The objects given to you are of different shapes so they can be grouped by their shapes like cylindrical, round and irregular etc. They can be grouped on the basis of colour or materials they are made from.